jackcartersmith/picocalc_BIOS
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picocalc_BIOS/README.md

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PicoCalc "southbridge" custom BIOS

This is my personnal rewrite of the original PicoCalc STM32F103R8T6 firmware.

Features differences

The main differences with the original firmware are the followings:

  • drastic reduction in the STM32's electricity consumption when running (~3.5 mA),
  • clean up (in progress) to reduce binary size (~25 KB) and allow more features to be implemented,
  • removed stm32duino dependencies (use STM32HAL instead, maybe I'll switch to libopencm3 someday...),
  • added configuration saving solution (using internal flash, including backlight option),
  • rewriten or added some debug UART interface message,
  • lighten AXP2101 PMIC driver.

Compile

This source code can be compiled using ARM gcc toolchain (using v13) in path and using make program.

Credits